1. The Mechanical and Physical Properties of the British Standard EN Steels (B.S. 970–1955);Woolman,1969
2. Steel Heat Treatment – Metallurgy and Technology;Totten,2006
3. Smithells Metals Reference Book;Gale,2004
4. Steel and its Heat Treatment;Thelning,1984
5. Heat Treater’s Guide: Practices and Procedures for Irons and Steels;Chandler,1994